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# If x - y > 10, is x - y > x + y ?

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If x - y > 10, is x - y > x + y ? [#permalink]  21 Nov 2010, 15:44
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58% (01:55) correct 42% (00:38) wrong based on 71 sessions
If x - y > 10, is x - y > x + y ?

(1) x = 8
(2) y = -20
[Reveal] Spoiler: OA

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Re: DS: GMAT prep [#permalink]  21 Nov 2010, 15:54
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vrajesh wrote:
if x - y > 10, is x - y > x + y
(1) x = 8
(2) y = -20

Given: $$x-y>10$$. Question: is $$x-y>x+y$$? --> is $$2y<0$$? --> is $$y<0$$?

(1) $$x=8$$ --> $$8-y>10$$ --> $$y<-2$$, hence $$y<0$$. Sufficient.
(2) $$y=-20$$, hence $$y<0$$. Sufficient.

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Re: DS: GMAT prep [#permalink]  21 Nov 2010, 16:17
thanks for the quick response.
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Re: DS: GMAT prep [#permalink]  16 Mar 2011, 21:46
On simplfying, it can be seen that the question is asking if y < 0

From (1) 8 - y > 10

=> y < -2, so sufficient

(2) is sufficient too

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Re: If x - y > 10, is x - y > x + y ? [#permalink]  04 Sep 2014, 11:41
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Re: If x - y > 10, is x - y > x + y ?   [#permalink] 04 Sep 2014, 11:41
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